The cheapest mosfet anti spark switch build ever, hopefully

DIY Builds
#21

wait ;ike actaully? 10 full size fets? thats hilarious.
I suppose its not about the amplitude but the speed of the rising edge

3 Likes
#22

Itā€™s the power dissipated in the pulse surge.

I literally have two open source designs available that both have been tested by members and address this problem. Time for me to make a thread.

5 Likes
#23

Thanks for the info
I was looking at the ltc 7001 a week ago.think I will use this one now as itā€™s proven, high side switching is best option for sure.

#24

Think I will make a 10 qnty batch pcb of these using the above design if anybody is interested will look nice and have a fuse fitted. At cost no profit.

2 Likes
#25

Thatā€™s if you donā€™t mind gamer?

#26

Iā€™d buy a pair as Guinea pig from you or @Gamer43 if you guys do it.

Will mount it rough : vertically with lots of movements and just some padding to reduce vibrations.

#27

Ok just need permission first from gamer, i have pcb nearly finished will send it off next couple of days I used to be a pcb designer :grinning:.

pcb only, no switches, will be nicly insulated double heat shrink, and have cables and connectors, will have a proper fuse in it, no automotive fuses, which are not rated to 60v DC, but saying that they still probably work, just like to do things properly.

Iā€™m sure it will work perfect as the ic used is perfect for that application

Like I said will be at cost no profit, just making a batch of 10 as I need 2 will ship world wide at cost.

Should be ready in under 2 weeks hopefully as pcb house I use is pretty quick.

2 Likes
#28

Whatā€™s wrong with 58V midi fuses?

#29

Iā€™d be in for one or two, let me know cost.

#30
#31

I believe it was explained your switch doesnā€™t provide an inrush protection? No offense, correct me if Iā€™m wrong.

#32

some automotive fuses only ratd to 42v max, they would probably work ok, but would like to use something with a room for error, so id probably go for a 100v fuse.

#33

Iā€˜m no electric engineer but this looks fine for me on a 12S pack
https://www.mouser.co.uk/Circuit-Protection/Fuses/Automotive-Fuses/_/N-ba8b5?P=1ylo5uu

#34

think i will forget the fuse think most people already have their own

#35

Ok now have permission from the owner of this proven design, if anybody wants one at cost please let me know thanks

#36

:point_up:t2:

10 characters

#37

ok will start a new thred